plastic eyelet

ABSTRACT

A plastic eyelet is formed of plastic by injection molding. The plastic eyelet makes it possible to couple male and female eyelets by means of simple pressing. After coupled, the male and female eyelets are not separated arbitrarily.

TECHNICAL FIELD

The present invention relates to a plastic eyelet. Up to now, eyelets have been used not only to prevent damage to a fabric, etc. but also make a design excellent in the case in which male and female eyelets are coupled up and down with the fabric in between and which a tie is connected through through-holes of the fabric.

However, most of the eyelets have been made of metal, which is deformed by pressing in order to couple the male and female eyelets.

BACKGROUND ART

In order to prevent damage to a fabric 100 when used by connecting a tie (not shown), etc. through through-holes 110 of the fabric 100, most of the eyelets, which are in use at present, are adapted so that male and female eyelets 10 and 20 of each eyelet are coupled in each through-hole 110 up and down. Thereby, in the case in which the tie is connected through the through-holes 110 of the fabric 100, the eyelets serve to prevent the damage to the fabric (100) and make a design excellent.

However, most of these eyelets have been made of metal, which is deformed by pressing the male and female eyelets 10 and 20, both of which constitute each eyelet and are coupled by post-processing such as pressing.

DISCLOSURE OF INVENTION Technical Problem

Accordingly, the present invention has been made in an effort to solve the problems occurring in the related art, and an object of the present invention is to provide a plastic eyelet, which is formed of plastic by injection molding, makes it possible to couple male and female eyelets by means of simple pressing, and makes it impossible to arbitrarily separate the male and female eyelets from each other after the male and female eyelets are coupled.

TECHNICAL SOLUTION

In order to prevent damage to a fabric 100, when used by connecting a tie (not shown), etc. through through-holes 110 of the fabric 100, most of the eyelets, which have been used up to now, are adapted so that male and female eyelets 10 and 20 of each eyelet are coupled in each through-hole 110 up and down.

However, most of these eyelets have been made of metal, which can be deformed by pressing the male and female eyelets 10 and 20, which constitute each eyelet and are coupled by post-processing such as pressing.

However, the metal eyelet has a disadvantage in that it is vulnerable to corrosion, and thus causes damage to the fabric. In view of the properties of the metal, the metal eyelet requires separate machining such as polishing due to the sharpness of cut faces, and thus is not economical.

Thus, an abject of the present invention is to provide a plastic eyelet, which is formed of plastic by injection molding and makes it possible to couple male and female eyelets by means of pressing.

The disadvantage of the metal eyelet is to give rise to corrosion. In order to prevent this corrosion, various types of additional processing such as plating are required. In particular, this corrosion causes damage to the fabric.

The metal eyelet indispensably requires separate machining such as polishing due to the sharpness of cut faces attributed to the properties of the metal. Further, due to the coupling of the male and female eyelets, the metal eyelet is difficult to reduce a height difference with respect to the fabric. In addition, the metal eyelet subjected to post-processing such as plating in order to prevent the corrosion results in being damaged, and thus is corroded by moisture. As such, the metal eyelet is not used in various types, and is not economical.

ADVANTAGEOUS EFFECTS

According to the present invention, the plastic eyelet is formed of plastic, so that the plastic eyelet causes no damage to the fabric when coupled with any fabric. Because the plastic eyelet is formed of plastic, it does not damaged by washing. The pins of the male eyelet are flattened by simple pressing, and thereby are filled in the steps of the pin holes of the female eyelet. As a result, the male eyelet is prevented from being arbitrarily separated from the female eyelet.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a perspective view illustrating a process of assembling a plastic eyelet according to an embodiment of the present invention;

FIG. 2 is a sectional view illustrating the state in which a fabric is coupled with a plastic eyelet according to an embodiment of the present invention;

FIG. 3 schematically illustrates the pressed state of a plastic eyelet according to an embodiment of the present invention;

FIG. 4 is a perspective view illustrating the external appearance of a male eyelet of a plastic eyelet according to an embodiment of the present invention;

FIG. 5 is a perspective view illustrating the state in which a fabric is disassembled from a plastic eyelet according to an embodiment of the present invention;

FIG. 6 schematically illustrates an eyelet in the related art.

DESCRIPTION OF SYMBOLS OF THE MAIN PARTS IN THE DRAWINGS

10: female eyelet

11: pin hole

12: clamping pin

13: hole

14: step

20: male eyelet

21: pin

22: sharp point

23: clamping pin

24: partition

25: hole

BEST MODE FOR CARRYING OUT THE INVENTION

Above all, plastic used for the present invention is low-density polyethylene. The low-density polyethylene is produced by heating under high pressure of about 1000 atm at a temperature of 200 C or more using a small amount of air as a catalyst. In general, in the case of high-density polyethylene, the density amounts to about 0.91, and the molecular arrangement is not sufficient due to a branched structure. Further, the crystallized fraction amount to about 65%. Thus, the high-density polyethylene becomes soft and stretches well. Further, the high-density polyethylene is weak in tensile strength, but is high in impact resistance, so that it is easily wrought and used.

This low-density polyethylene resin is molded into an eyelet by injection molding. This molded eyelet, as illustrated in FIG. 1, comprises a female eyelet 10 and a male eyelet 20. The female eyelet 10 has a central hole 13 passing through the center thereof, a plurality of pin holes 11, each of which a step 14 is formed therein and which pass through the female eyelet, i.e. from one surface to the other surface of the female eyelet, and a plurality of clamping pins 12 that are formed on the other surface of the female eyelet between the pin holes at a low height. The male eyelet 20 has a central hole 25 passing through the center thereof, a plurality of pins 21 that are inserted into the pin holes 11 and have sharp points 22 at free ends thereof, and a plurality of clamping pins 23 that are interposed between the pins 21 so as to alternate with the clamping pins 12 of the female eyelet 10 when the male and female eyelets are coupled with each other.

MODE FOR THE INVENTION

Hereinafter, an embodiment of the present invention will be described below in detail with reference to the accompanying drawings.

First, the same reference numerals are used to indicate the same parts as those of the related art.

To couple the female and male eyelets, the pins 21 of the male eyelet 20 are pressed and flattened, and thereby are filled in the steps 14 of the female eyelet 10. This filling is possible due to characteristics of the polyethylene (PE).

At this time, the clamping pins 12 and 23 are located in an alternate manner, so that the eyelets are prevented from moving around with the fabric in between.

As illustrated in FIG. 4, each pin is designed to be pointed at the sharp point 22 of the free end thereof, and to gradually increase a flesh as it approaches a fixed end thereof. Thus, when inserted into the fabric, the pins exert good supporting force. At the same time, when pressed, the pins are accurately pressed down without being bent.

Accordingly, a partition 24 of the male eyelet 20 is inserted into the hole 110 drilled in the fabric 100, and thus the sharp point 22 of each pin 21 of the male eyelet 20 is inserted into the fabric 100. Subsequently, the pins 21 are inserted into the pin holes 11 of the female eyelet 10, and then are pressed down. Thereby, the male eyelet 20 and the female eyelet 10 are brought into close contact with each other, and simultaneously the pins 21 are flattened and filled in the steps 14 of the pin holes 11 of the female eyelet 10. As a result, the male eyelet 20 and the female eyelet 10 are closely coupled, and simultaneously the fabric 100 is firmly fixed by the clamping pins 12 and 23 of the female eyelet 10 and the male eyelet 20.

INDUSTRIAL APPLICABILITY

The metal, that is the material of the eyelet used in the related art, requires separate machining such as polishing due to the sharpness of cut faces in view of the properties of the metal. Further, the metal subjected to post-processing such as plating in order to prevent the corrosion results in being damaged, and thus is corroded by moisture. As such, the metal eyelet is not used in various types, and is not economical. In order to cope with this disadvantage, the eyelet is formed of plastic, so that the plastic eyelet is saved the cost for the post-processing, and thus prevents the loss of the economical expenses.

SEQUENCE LISTING

Eyelet, Injection molding by plastic 

1. A plastic eyelet comprising comprising: a female eyelet (10) including clamping pins (12) between pin holes (11), each of which a step (14) is formed therein; and a male eyelet (20) including pins (21) having sharp points (22) inserted into the pin holes (11) of the female eyelet (10), and clamping pins (23) interposed between the pins (21) so as to alternate with the clamping pins (12) of the female eyelet (10), wherein the pins (21) of the male eyelet (20) are pressed and flattened, and thereby are filled in the steps (14) of the female eyelet (10).
 2. The plastic eyelet as set forth in claim 1, wherein each pin of the male eyelet includes a sharp point (22) at a free end thereof, and gradually increases a flesh as it approaches a fixed end thereof. 